FWIW, we recommend disabling C-states in the BIOS for NexentaStor systems.
C-states are evil.
On Oct 31, 2011, at 9:46 PM, Lachlan Mulcahy wrote:
> Hi All,
> We did not have the latest firmware on the HBA - through a lot of pain I
> managed to boot into an MS-DOS disk and run the firmware update. We're now
> running the latest on this card from the LSI.com website. (both HBA BIOS and
> No joy.. the system seized up again within a few hours of coming back up.
> Now trying another suggestion sent to me by a direct poster:
> * Recommendation from Sun (Oracle) to work around a bug:
> * 6958068 - Nehalem deeper C-states cause erratic scheduling behavior
> set idle_cpu_prefer_mwait = 0
> set idle_cpu_no_deep_c = 1
> Was apparently the cause of a similar symptom for them and we are using
> At this point I'm running out of options, so it can't hurt to try it.
> Lachlan Mulcahy
> Senior DBA,
> Marin Software Inc.
> San Francisco, USA
> AU Mobile: +61 458 448 721
> US Mobile: +1 (415) 867 2839
> Office : +1 (415) 671 6080
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